Machine for making structures centrifugally



Aug. 21, 1923. Y M6529? H. CON RADI MACHINE FOR MAKING STRUCTURES CENTRIFUGALLY Filed Jan. 5, 1923 Hun Conrad NvENTORf l I. do hereby declare the Patented Aug. 21, 1923,.

- i a errar rifinita' conn-ADI, or Toonen, VICTORIA, Ansmann..

MACHINE roniviAKri-JG s'rmicrunnsonNTRrruGA-LLY.

Application ined January a, .15523. semi No. 610,418.

To all whom it may concern.' Y

Beit known that LTHARRY CONRADI, a subjectof the' King of Great Britain and Ireland, residing` at la 4Woodside Crescent, Toorak, in the State of Victoria, Commonwealth of Australia, have invented certain new and useful Improvements in Machines for' lVIakingl Structures Cetr'ifugally; ,and following to be' a full, clear, and exact'descr'iption of the invention, such asiwill enableothefrs skilled in the artto which it appertains to make and use'lthesame. Y 1

My invention' providesV compact mechanism for the manufacture. ofar'ticlesfof plas ticmater'ial byy a series-of centrifugal mouldingma'chines, each ofwhich can be started, operated, varied in" speed,`regulated to condition's of work, and stopped independently.

Tov explain my improvements I now. refer to the accompanying drawings, in which the scales diifenand which 4are-in parts diac ganterie.

In'. this specificationV the terms` vertical and'V horizontal include approximations.

Figure 1 is' a plan'ofa mouldingmachine, and partof the' driving mechanism of another: j

FigureQ isa sidefelevationof the machine shown'in'Fig'iire l.

Figure 3 is` an end/"View,v showing` a1 mouldingniachinc, and paitof'another.

Figure 4lA is apartly, sectional plan showf inglparts of the'speed changing and clutch 35 mechanism ofI a machine.

Figure 5 isa sectional endview on line.v

5^ of'Figure 4. p p y y Figure 6 is a plan of portion of a guard roller device.` l

Figure 7, isa sectional through the guard roller.L

My invention-does` not relate to anypari ticular form of mould and the objects to,

be m-ade may vary,.and may include `reinforcement. As an eiilample'of moulds which are usable, I illustrate two, and in Figure 3 one is of longer diameter vthan the other.

To enable the mould to be driven it has external means, as bands or flanges, suitably spaced apart. The position of the wheels which I use to rotate the mould is impor-V tant, as also the locations of my mould position regulators, orV guard rollers.

A main shaft a is supported in bearings, a1, and at each of a series of convenient points along the shaft, a counter shaft b `ing machine, the' shafts b, b1

- gear wheel g Y p .Y around it a vrecess 71,1, a split collar 7b, t' View ofFigure 6 is adapted to be driven through bevel gearing a2. Each counter shaft is connectible to the driveshajft 51 of a centrifugal mould- Y being supported in bearings b2, on a frame' b3, and having between thema b4. The shaft can be Vgeared to drive shaft' b1l at its ow'n speed, but I provide for changing the rate of rotation of shaft 61, VThus I employ a clutch mechanism the' lower par'tjof which isshown clearly' in Figure il', `the upper part being shown in Figure 2. ,In this mechanism a shaft'y e carries af Agear wheel (Z3, whihme'sheswith a pinion a2, wiiiqhis rotatable on shaftA b. Shaft e also carries a pinion f Vwhich meshes with' afgear wheel f1 which is rotatable o'n shaft b1, To provide that the centrifugal machine shall have two working speeds, vone slow, the other` fast,

rati'osrwill be determined accordingly. The drawings show mechanism for two such speeds. I maymalre any gear wheels removable at will to allow of varying the working"speeds,` In theinechanisin illustrated a lflanged clutch disc dais lined to pinion` fl2` and a flanged clutch disc f2 is fixed to gear wheel f1. i

Slidablef on shaft b is aclutch member which contains oppositely 'directed 'flanged discs c, Z1 united by a hub g; and shaft b1 carries i a similar 4slidable` clutch member containing oppositey directed flanged discs c?, f3 united ,by a hubg lach hub is engaged by means which. willslide Ythe two clutch members each along its shaft simultaneously to or from Yone another, according to `whether high orv low speed is to' be applied'to shaft b1. rlhus each hub g, g1 has entering each recess,` andbeing engaged b.,7 the arms j of a lever having a boss jl which issuitably pivoted as on a support jd'. The lever, has an ariny'z'having its endforlred, the limbs vof the latter being slotted and engaged with pins projecting from a nut js mounted on a rod lf: which is supported on the frame. This rod has right hand and left hand screw threads which the respective nuts je engage; and the said rod is adapted to be rotated by means of a hand wheel icl. The speed of rotation of shaft 1, Iand therefore of its machine, is regulated by operation of hand wheel k1; and by the latter also any machine can be stopped independently of other machines.

In Figure 4 the shaft b1 is geared to ropositions, by means of hand wheel icl.

the machine frame.

tate at a low speed, but to change to higher speed'the handle /cl is rotated rapidly, moving the nuts js farther apart, and'moving the lever arms y' so that they slide the hubs g, g1 and the clutch members c and 01 therewith towards one another till the parts 0 and c1 engage. But if stoppage of rotation is desired the clutch members willv be moved only to intermediate positions, Yby setting clutch members (l, c, and f3 in disengaged Mymould driving wheels are -marlted m.

VThe centre of each is vertically below the .longitudinal axis of a mould oi; mould bands or flanges are marked m1. I provide mould positionV regulators ateach side of each mould. These regulators are adjustable guard rollers o; and they can be adjusted as found desirable; but an important position provided for is with the centre of each roller and the centre of the intermediate mould all in one horizontal plane during the centrifugal action. I may set one or more guard rollers slightly above the horizontal diameter of a mould, to prevent or limit upward rise of a mould.

By adjusting bearings 02 and thus rollers o, the latter'will be set to act as abutments for moulds of different diameters, a relatively small inould being shown at the right side of Figure 3. Various means of roller adjustment are usable; rollers 0 have axles 0 1 in adjustable bearings 02 on beams p of bearings where desired.

I use also, however, in some cases screw adjustment bearingdeviees, as shown clearly in Figures 6 and 7, whe-re the bearings are slidable on guides r which are secured to jbeams p as by bolts entering convenient holes p1. Each bearing o2 carries a nut s,

' on a screw threaded bolt or spindle s1, which is supported by brackets on a base TL TheY spindle s1 carries a gear wheel t, meshing ,with a pinion t1 on a rod u having a handle u1, by which to rotate rod u, and thus spindle .s1 arid adjust the bearing".

Easy removal of moulds at will is practicable, because by rotating the handle alf clear space will be produced between the guard roller 0 of that bearing and the mould.

These beams .diverge upwardly. They have iixing means, sho-wn as holes p1 for bolts which fix the adjustable It is not essential during centrifugal action that the mouldV shouldY always have every guard roller in rictional contact with it.V There maybe at times clear space atV Y one or more rollers.

y Theldiverging-beams p may bemore upright than is illustrated; and are not necessarily made with plane surfaces, but'may have surfaces which curve. Y Y

I claim Y l. For the" manufacture centritugally of Vbodies by Ythe use of plastic material, a machine Vhaving Va mould, rictional driving wheels to rotate and support the mould having theirV centres vertically below the Yframing. Y

4L. The `construction setforth'in claim'l, but in which a guard roller has its axle supported in a bearing member which, by means of a screw bolt, is movable upon a base, the said base being adjustable upon machine framing, the'screw bolt being actuated by bevel gear, the machine V framingV having holes for attachment of the said base.V

5. In a centrifugal machine for manufacturing products by .theuse of plastic mateforth *in claim l, i

rial, mouldibandsV which-rest'upon driving Y wheels having'their centres vertically under the bandcentres, and mould side guards which contain rollers, andare adjustable on Y frame members which diverge outward up-V wardly.

but with the members of the frame which support the bearings extending obliquely. v

In witness whereofI have hereunto set my hand. 'l A 'Y Y HARRY CONRADI.

Witness:

GEORGE 6. The construction set orthin claimv, 

